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lavfi: add ff_parse_pixel_format() internal function, and use it

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Reduce code duplication.
This commit is contained in:
Stefano Sabatini 2011-08-22 14:56:23 +02:00
parent 2c6348ea67
commit e26782a9b4
4 changed files with 33 additions and 15 deletions
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15
libavfilter/formats.c
View File

@ -236,6 +236,21 @@ void avfilter_formats_changeref(AVFilterFormats **oldref,
/* internal functions for parsing audio format arguments */
int ff_parse_pixel_format(enum PixelFormat *ret, const char *arg, void *log_ctx)
{
char *tail;
int pix_fmt = av_get_pix_fmt(arg);
if (pix_fmt == PIX_FMT_NONE) {
pix_fmt = strtol(arg, &tail, 0);
if (*tail || (unsigned)pix_fmt >= PIX_FMT_NB) {
av_log(log_ctx, AV_LOG_ERROR, "Invalid pixel format '%s'\n", arg);
return AVERROR(EINVAL);
}
}
*ret = pix_fmt;
return 0;
}
int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx)
{
char *tail;

10
libavfilter/internal.h
View File

@ -63,6 +63,16 @@ int ff_fmt_is_in(int fmt, const int *fmts);
/* Functions to parse audio format arguments */
/**
* Parse a pixel format.
*
* @param ret pixel format pointer to where the value should be written
* @param arg string to parse
* @param log_ctx log context
* @return 0 in case of success, a negative AVERROR code on error
*/
int ff_parse_pixel_format(enum PixelFormat *ret, const char *arg, void *log_ctx);
/**
* Parse a sample rate.
*

10
libavfilter/vf_format.c
View File

@ -25,6 +25,7 @@
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
typedef struct {
/**
@ -41,7 +42,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
FormatContext *format = ctx->priv;
const char *cur, *sep;
char pix_fmt_name[PIX_FMT_NAME_MAXSIZE];
int pix_fmt_name_len;
int pix_fmt_name_len, ret;
enum PixelFormat pix_fmt;
/* parse the list of formats */
@ -57,12 +58,9 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
memcpy(pix_fmt_name, cur, pix_fmt_name_len);
pix_fmt_name[pix_fmt_name_len] = 0;
pix_fmt = av_get_pix_fmt(pix_fmt_name);
if (pix_fmt == PIX_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR, "Unknown pixel format: %s\n", pix_fmt_name);
return -1;
}
if ((ret = ff_parse_pixel_format(&pix_fmt, pix_fmt_name, ctx)) < 0)
return ret;
format->listed_pix_fmt_flags[pix_fmt] = 1;
}

13
libavfilter/vsrc_buffer.c
View File

@ -24,6 +24,7 @@
*/
#include "avfilter.h"
#include "internal.h"
#include "avcodec.h"
#include "vsrc_buffer.h"
#include "libavutil/imgutils.h"
@ -134,7 +135,7 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
{
BufferSourceContext *c = ctx->priv;
char pix_fmt_str[128];
int n = 0;
int ret, n = 0;
*c->sws_param = 0;
if (!args ||
@ -145,14 +146,8 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
return AVERROR(EINVAL);
}
if ((c->pix_fmt = av_get_pix_fmt(pix_fmt_str)) == PIX_FMT_NONE) {
char *tail;
c->pix_fmt = strtol(pix_fmt_str, &tail, 10);
if (*tail || c->pix_fmt < 0 || c->pix_fmt >= PIX_FMT_NB) {
av_log(ctx, AV_LOG_ERROR, "Invalid pixel format string '%s'\n", pix_fmt_str);
return AVERROR(EINVAL);
}
}
if ((ret = ff_parse_pixel_format(&c->pix_fmt, pix_fmt_str, ctx)) < 0)
return ret;
av_log(ctx, AV_LOG_INFO, "w:%d h:%d pixfmt:%s tb:%d/%d sar:%d/%d sws_param:%s\n",
c->w, c->h, av_pix_fmt_descriptors[c->pix_fmt].name,